In this article we will discuss about the characteristic features of ginkgoales. (a) Vegetative Organs: 1. Medium-sized trees with spreading branches, dioecious. 2. Leaves long-stalked, flattened and lobed in various ways with dichotomous venation. 3. A thick cortex, a comparatively thin vascular cylinder and a large pith with mucilage canals or reservoirs. 4. Vascular cylinder […]
Characteristic Features of Ginkgoales | Gymnosperms | Botany
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Life Cycle of Taxus | Coniferopsida | Gymnosperms | Botany
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In this article we will discuss about the life cycle of taxus. The Sporophyte of Taxus: The plant is a slow-growing tree with an usual height of 30- 40 feet, and bearing horizontally growing branches of unlimited growth forming a thick canopy. Dwarf shoots are absent. The leaves are simple, dorsiventral, slightly stalked, and are […]
Life Cycle of Pinus | Coniferopsida | Gymnosperms |Botany
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Pinus, the familiar pine tree, is represented by nearly 90 species, which are widely distributed throughout the Northern Hemisphere, specially in extra-tropical regions. In India, the different species of Pinus are mainly restricted to the Western Himalayas, while only P. insularis is found to be growing in the Khasia and Jaintia Hills of Assam. On […]